The word(s) "ishhadoo" appears 3 time(s) in 3 verse(s) in Quran.

(1) Qul ya ahla alkitabi taAAalaw ila kalimatin sawain baynana wabaynakum alla naAAbuda illa Allaha wala nushrika bihi shayan wala yattakhitha baAAduna baAAdan arbaban min dooni Allahi fain tawallaw faqooloo ishhadoo bianna muslimoona

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #64)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(2) Waith akhatha Allahu meethaqa alnnabiyyeena lama ataytukum min kitabin wahikmatin thumma jaakum rasoolun musaddiqun lima maAAakum latuminunna bihi walatansurunnahu qala aaqrartum waakhathtum AAala thalikum isree qaloo aqrarna qala faishhadoo waana maAAakum mina alshshahideena

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #81)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(3) In naqoolu illa iAAtaraka baAAdu alihatina bisooin qala innee oshhidu Allaha waishhadoo annee bareeon mimma tushrikoona

(سورة هود, Hud, Chapter #11, Verse #54)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)